Case Diagnostics for Factor Analysis of Ordered Categorical Data With Applications to Person-Fit Measurement. Issue 1 (2nd January 2018)

• Record Type: Journal Article
• Authors: Mansolf, Maxwell; Reise, Steven P.
• Is Part Of: Structural equation modeling. Volume 25:Issue 1(2018)
• Page Start: 86
• Page End: 100
• Publication Date: 2018-01-02
• Subjects: categorical factor analysis -- item response theory -- outliers -- person-fit; Multivariate analysis -- Periodicals; Social sciences -- Statistical methods -- Periodicals; 519.535
• DOI: 10.1080/10705511.2017.1367926
• Languages: English
• ISSNs: 1070-5511

Abstract

Abstract : Mahalanobis distance (M-distance) case diagnostics are a useful tool for assessing response pattern inconsistency in factor analysis; however, the derivations of these statistics assume continuous variables, which limits their utility in ordinal self- or rater-report data. This research generalizes M-distance diagnostics to categorical factor analysis. We prove that the residual-based M-distance dr is equivalent to the person-fit index lco, which motivates the use of the new categorical M-distance dr * as a person-fit index. dr * is compared and contrasted with zh, a commonly used item response theory person-fit index. A simulation study is used to show that a simple transformation of dr * satisfies established criteria for person-fit measures. A sample of responses to the Rosenberg Self-Esteem Scale is used to determine parameters for a simulation study, and real data are analyzed to contrast the use of dr and dr * as indexes of person-fit in continuous and categorical factor analysis.